Adding-machine.



J. C. DRUSCHKE.

ADDING MACHINE.

APPLICATION FILED JAN.31.1914.

3 SHEETS--SHEET 1 m w 9 s' N WITNESSES: INVENTOR war [01M 6 c 4 BYINTO/W57 Patented Dec. 8, 1914.

3 SHBETS-SHEET 3.

J. C. DRUSGHKk ADDING MACHINE.

APPLXCAI'IUN rum JAN.31, 191 1,

lllllllllfllll III! III ang NH? $TATES PATENT QFFICE.

JULIUS C. DRUSCHKE, QR HOUSTON, TEXAS.

AI) DING-MACHIN E,

1,120, 138. flpeolfloatlon of Letters Patent.

Patented Dec. 8, 1914.

Application filed January 81, 1914. Serial No. 815,638.

To all whom it may concern Be it known that I, JULIUS C. DRUBGHKE, acitizen of the United States, residing at Houston, in the county ofHarris and State of Texas, have invented certain new and usefulImprovements in 'Adding-Machiiies,

of which the following is a specification.

This invention relates to new and usef l improvements in adding machinesThe object of the invention is to provide a device of the characterdescribed havi g and illustrated in the accompanying drawiiigs, wherein-Fu ure 1 1S lan view of the com letc p device. Fig. 2 is a horizontalsectional view thereof. Fig. 3 is l] vertical sectional end viewthereof. Fig. t IS a detail of the operative mechanism. Figs. 5 and 6show side and edge views, respectively, of the disks employed in saidmechanism. Fig. 7 is a plan view of another form of disk employed. Figs.8 and 9 show side elevation and edge views,.r'espectively, of one of thenumeral disks. Fig. 10 is a linear view of the periphery of the diskshown in Figs. 8 and 9. Fig. 11 shows a plan view of the operating disk,and Figs.'12 and 13 show views of one of the disk supporting shafts.

Referring now' more particularly to the drawings wherein. like numeralsof referonce designate similar parts in each of the figures, the numeral1 refers to a box-like casing which contains the operating mechanism ofthe device. Secured to the bottom thereof. on the inside. are thelengthwise extending bars 2, 3. and whose ends are outwardly turned.forming: bearing mem' hers G, 6, 7, 7, S. 8, and 9., 9, in which the respective ends of the shafts 10, ll, 12 and 13, respectively, havebearings. Near one end of the casing is a vertical shaft 14, which ismounted in suitable bearings carried by the top. bottom of the casingand shaft has a rigidly mounted bevel gear Wheel 15,

which meshes with a similar gear wheel 16,

rigidly mounted on the extended end of-the out'thrqugli the top of thecasing and has a circular disk 17 fixed thereon and spaced.

a small distance from the top of the casing.

This disk has ten orifices 18 arranged in a Shaft 12. ()ne end of theshaft 14 extends circular row around the edge thereof and underneaththese orifices are printed on the top of the casing 1 the numeralsbeginning at 1 and ending with 0, arranged. in consecutive order. Fixedupon the shaft 12 between the bearings 8, 8 is the roller 19,

which is fluted from end to end, giving its periphery a serratedappearance in cross section. Loosely mounted upon the shaft 11 are aplurality of numeral 20, 21, 22,

23, 24, 25, and 26, only seven being shown,

but this number may be increased in ac; cordance with the desiredjcapacityof the machine and loosely mounted upon the shaft.

, 10 are a like number of disks 2-7, 28, 29,30,

31, 32 and 33 arranged in staggered relation/ ad to the disks mounted onthe shaft 11, the

edges of the disks of said respective shafts overlapping. The peripheryof'these disks 27 to 33 illClllSil'QltIG serrated, or toothed.

26 inclusive is another disk somewhat thinner and smaller in'diameterthan the disk to which it is fixed, saiddisks being numbered from 3 1 to40, respectively. These Fixed to one side of each ofthe disks 20 to asdisks are serrated and mesh with the corrcsponding disks 27 to 33 andare rotated thereby. Fixed to the side of the disks 20 to 26, inclusive,opposite the disks 34 to 39, inclusive, are the disks L1 to 46,inclusive,

which have smooth peripheries, but at one 96 side each of said disks hasa pair of teeth 47 projecting from the periphery, which enpage with andpartially turn the respective disks 28 to 33. inclusive, as said disks41 to 46 rotate.

Each of the disks 20 to '26, inclusivefis provided with the numerals 1to 0, inclusive, printed on the periphery thereof and spaced apart therearound. The top of the casing 1 is provided with small openings or \\iiidows numbered from 48 to 54, inclusive, which are nlined with therespective disks 20 to 26, inclusive, respectively, so that as said,

last mentioned disks are rotated, the nu-I merals carried thereby willbe successively iio exposed through said windows, as shown in Fig. l.

The shaft 13 has a sliding bearing which supports a fork 56, between thefingers of which is rotatably mounted the disk 57, whose periphery isserrated and meshes with the teeth of the roller 19. This fork may bemoved on its bearing along the shaft 13 and caused to mesh successivelywith the disk 31 to 40, inclusive. In the top of the casing 1 is alengthwise slot 58, whose inner side has tlu notches 59 to 65 inclusive,and

the fork 56 has an extended arm 66 which projects out through the slot58 and whose outer end has a grip 67, by means of which said fork may bemoved along on the shaft 13 and the disk 57 may be locked in mesh witheither of the respective disks 34 to 10, inclusive, by seating said arm66 in the corresponding notch in the side of the slot 58.

Before beginning to add a column, or number of columns, the Os of thedisks 20 to 26, inclusive, are brought into alineinent, by a mechanismhereinafter to be described, before the windows 48 to 51, inclusive, andthe disk 57 is brought into mesh with the disk 31, as hereinbeforeexplained. In order to illustrate the operation of the machine, thenumbers 597,827 and 275 will be arbitrarily taken and added together. Inmaking this addition, the unit column will be first added, then the tenscolumn and the hundreds column. Some suitable instrument, as a pencil,is firstinserted in the oriiice 18 of the disk 17, over the numeral 7and said disk then turned to the left, as indicated by the arrow in Fig.1, until the instrument comes in contact with the stop (38-, which issecured to the casing and ex tends over one edge of said disk 17. Thispartial rotation of'the disk 17 will be imparted to the shaft 14 andtransmitted through the gears 15 and 16, to the shaft 12 and the roller19 fixed thereon and will operate through the gears 57 and 34, to partially rotate the disk 20 and bring the numeral 7 in front of the window48.; The instrumentused for turning the disk 17 is again insertedthrough the orifice over the numeral 7 and the disk 17 again turned, asbefore described, and then inserted through the orifice over the numeral5 and turned until the stop 68 is reached. The total of the first columnis 19 and the numeral 9 will be visible through the window 48. Theoperation of adding the first column will have caused more than onecomplete revolution of the disk 17, as the total of the column is morethan 10, and inasmuch as the gear wheels 15 and 16 arethe same size, thedisk 17 and roller 19 will rotate in unison. The roller 19, the disk 34:and the disk 37 are of the same diameter and consequently rotate inunison, therefore, as in the addition of the first column of figures,the disk 17 performed more than a complete revolution, the disk 41 alsoperformed more than a complete revolution, as said disk 41 and the disks34 and 20 are integral and rotate together. By the rotation of the disk41, the teeth 47 carried thereby, meshed with the teeth of the disk 28and caused a partial rotation thereof, which rotation was trans mittedto the disk 35 and the disk 21 integral therewith and operated to bringthe numeral 1 opposite the window 49, showing the total. of the firstcolumn to be 19. The arm 66 is then depressed, out of the notch 59 andmoved along the slot 58, carrying the fork 56 and the disk 57 carriedthereby opposite the disk 35 and said arm is then. seated in the notch60 and the disk. 57 held in mesh with said disk 35. The second column offigures, or the tens column, is then added in the same manner ashereinbefore explained, by giving the disk 17 three partial turns,beginning first at 9, then at 2 and then at 7, giving a total of 19,after adding in the 1 ten carried from the total of the first column,which was added in by the partial turn of the disk 21 during theaddition of the first column. As hereinbefore explained, the disk 57 isthen brought into mesh with the disk 36 and the third column is added,as hereinbefore explained, by giving the disk 17 three partial turns bybegining first at 6, then at 8 and then at 2, giving a total of 17 afteradding in 1 hundred, carried from the total of the second column, whichwas added in by the partial turn of the disk 22 during the addition ofthe second column. The total of the three numbers added is 1799, asdisplayed through the win dows 48, 49, 50 and 51.

It is obvious that the operation illustrated may be continued and anynumber of columns added, the capacity of the machine being limited onlyby the number of numeral disks employed.

After the numbers have been added and the total result obtained, beforebeginning the addition of other numbers, it is necessary to restore thenumera lfdisks 20, to 26, inclusive, to their original position, so asto bring the Os opposite the respective windows 48 to 51, inclusive. Forthis purpose a mechanism has been provided. which -'will now bedescribed. Each of the disks to 33, inclusive has a stud projecting from.thc side thereof, said studs being indicated by the numerals 69 to 75,inclusive, and the shaft 10 has a corresponding num ber of short arms,numbered from 76 to 82, inclusive, projecting out laterally therefrom.These arms are normally out of the paths of the corresponding studs anddo not interfere with the rotation of the disks carrying said studs. Theshaft 10 is extended through the end of the casin 1 and has a bearing 83in said casing en This shaft has a limited sliding movement in itsbearings and its projecting end carries the head mamas 84, projectinginwardly from which is the finger 85, which normally rests in the notch86 in said bearing 83. Within the casing 1 and surrounding the shaft 10is a coil spring 87, which is interposed between the casing end and thecollar 88 fixed on said shaft. This spring normally holds the armscarried by the shaft 10 out of the paths of the studs above referred to.When it is desired to restore the numeral disks to their originalposition, the head 84 of the shaft 10 may be grasped and said shaftmoved lengthwise in its bearings, depressing the spring 87 and unseatingthe finger 85 from its notch 86. The shaft 10 may then be turned and asthe arms 76 to 82 have been brought into the paths of the said studs, bythe lengthwise movement of the said shaft, when the shaft is turned thearms will engage against the stud and rotate the disks 27 to 33,inclusive, which will in turn rotate the numeral disks 20 to 26, ashereinbefore explaincd. bringing them to the desired position by onerotation of the shaft 10. Said shaft should then be released and thepressure of the spring 87 will operate to move said shaft lcngtl'iwise,seating the free end of the finger R5 in the notch 86 and carry. ing therespective arms 76 to 82, inclusive, out of the paths of the respectivestuds 69 to 75, inclusive.

In order to prevent the spinning of the disks carried by the shafts l0and 11 and to insure the true rotation thereof, I have provided a brake89. consisting of an oblong member secured to the side of the oils ingand depending therefrom and whose under ide has a lining of soft leatheror felt, which contacts against the disks 2'? to 33 and prevents themfrom turning except when positive force is applied thereto.

What I claim is:

l. device of the character described including a supporting casing, aplurality of disks rotatably mounted therein, the peripher of each diskbeing provided with indicating characters. a manual operative mechanism.an adjustable operative connection whereby said manual 1nechanism'may beconnected with either" of said disks and an auxiliary disk. which is inintermittent engagement with one of said first mentioned disks and inconstant engagement with the other of said disks, wher by a rotation ofthe former will impart a. partial rotation to the latter.

2. A device of the character described, in eluding a casing, a pluralityof disks rotatablv mounted therein, the periphery of sively with saiddisks, while maintaining.

its driving relation with said member.

3. A device of the character described including a suitable supportingframe, a plurality of disks rotatably mounted therein, a

' manually operated mechanism, a rotatable member driven thereby, anadjustable operative connection actuated by said membet and in constantengagement therewith, said connecting means being movable with respectto said rotatable member so as to be brought into engagement successivelwith said disks, but constantlv maintaining its driving relation withsai member.

4. A device of the character described, including a supporting frame, aplurality of disks rotatably mounted therein, an operative mechanism, arotatable member driven thereby, an operative connection actuated bysaid member and constantly engaging therewith, said connecting meansbeing adjustable relative to said member so as to engage successivelywith'said disks, while maintaining its operative connection with saidmember and means whereby a complete rotation of one of said disks willimpart a partial rotation to the next succeeding disk.

5. A device of the character described ineluding a supporting casing, aplurality of disks rotatably mounted therein, the periphery of each diskbeing provided with indicating characters, an operative mechanism, anadjustable operative connection whereby said mechanism may be connectedwith either of said disks, a rotatable meniber driven b said operativemechanism and driving sai operative connection and in constantengagement therewith, and an auxiliary disk which is in intermittentengagement with one of said first mentioned disks and in. constant engaement with the other of said disks, where y a rotation of the formerwill impart a partial rotation to the latter. I

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses JULIUS c1 DRUSCHKE. Witnesses J.J. Hmne, MAY MONTGOMERY.

